==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.5.2
- Deployed with iRedMail Easy or the downloadable installer? --> installer
- Linux/BSD distribution name and version: Ubuntu 20.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):  MySQL
- Web server (Apache or Nginx): Nginix
- Manage mail accounts with iRedAdmin-Pro? iRedAdmin
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hello everyone,
we want to move our business mail account from MS Exchange to a self-hosted email server. We have chosen iRedMail for that purpose and I have set-up a server to test it first with another domain not our business domain.

However, I have the issue that all emails go to spam when I sent them. I understand that this is not a specific issue of iRedMail, but a general issue of self-hosted email servers. I also have setup the DKIM & DMARC records.

From the way I understand everything I could find so far on the internet, the algorithm has to be trained to not mark the email as spam. My question is not to what does the algorithm refer? Has it to be trained for the email server, so if I would setup another email domain on the server if would also not mark it as spam, the email domain or each individual email address? I would assume it is the email domain, but not quite sure. So, if I would move our email domain which we are already using to our iRedMail server will it go to the inbox since we are using them already for some years and so fare there is no spam issue or is everything set to zero since they are coming now from a new server?

Of course before we move our business email domain to the email server we have to figure this out, because we cannot risk that all or some of our emails go to spam.

Thank you very much in advance for your support. I highly appreciate it.